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Turbines

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Principles of Turbines

  • Turbines mixers operate on the principle of high-shear mixing.

  • The blades of the turbine create a turbulent flow in the liquid, which ensures rapid mixing and can create high shear forces suitable for breaking down particles and dispersing materials.

Construction

Turbines
Turbines

  1. Blades: Typically, multiple flat or curved blades attached to a central hub.

  2. Shaft: Central shaft that holds the turbine blades.

  3. Drive System: Motor and gearbox to rotate the shaft and blades.

  4. Mounting: Can be mounted vertically or horizontally in the mixing vessel.

  5. Vessel: The container that holds the liquid or slurry to be mixed.

Working

  • The turbine blades rotate at high speed when the motor is activated.

  • This rotation generates radial and axial flow, creating turbulent mixing zones.

  • The turbulent flow ensures thorough mixing of the liquid and efficient dispersion of solid particles or immiscible liquids.

  • Mixing continues until the desired level of homogeneity is achieved.

Uses

  • Chemical Industry: Mixing and dispersing chemicals.

  • Pharmaceuticals: Preparing suspensions and emulsions.

  • Food Industry: Blending sauces, soups, and beverages.

Merits

  • Efficient for mixing low to medium viscosity liquids.

  • Generates high shear forces, suitable for dispersing solids and emulsifying immiscible liquids.

  • Capable of handling a wide range of materials.

Demerits

  • High energy consumption.

  • Not suitable for high-viscosity materials.

  • Can cause significant shear stress, which may damage delicate ingredients.

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